Improvement in latches for doors



0. W; STONY,

Latch for Dnors. l No.154'730. Patentedlunezmavf.

D E A UNITED STATES PATENT Orrrcn ORSON W. STOW, OF PLANTSVILLE, CONNECTICUT.

IMPROVEMENT iN LATCHES FOR DOORS.

Specification forming part of Letters Patent No. 164,780, dated J une 22, 1875; application filed March 9, 1875.

To all whom it may concern:

Be it known that l', ORsoN W. S'row, of Plantsville, n the `county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Door-Latches, of which the following is a specification:

My invention consists in the peculiar construction, arrangement, and combination ot devices for producing a cheap and iirm latch that is conveniently operated, all as hereinafter described.

In the accompanying drawing, Figure l is a front elevation' of a latch-handle which embodies my invention. Fig. 2 is a front elevation of a latch-bolt and its casing which embody my invention. Fig. 3 is a horizontal section ot' said latch, taken 011 lines a .r of Figs. l and 2. Figs.. 4 and 5 are views of detached parts ot said latch.; and Fig. 6 is a sectional view, similar to Fig. 3, but showing a moditication ot' the manner of connecting the operating-levers.

A designates the barrel or cylindrical casing, and B the latch-bolt, which is provided with two or more cylindrical portions, ct a a, which tit the interior of the barrel A. The rear end ot' Jthe spindle B is red-need, so as to form aY small shaft, b, which slides through a hole at the rear end of the barrel A, and around which shaft b is a spiral spring, c, for projecting' the bolt B forward. y

Fig. 5 shows a vieu7 of the front end of the barrel A, upon which there is a square plate, d, which, when let into the door G, will prevent the vbarrel from turning in its place.

A back side view ot' the exterior plate C is shown in Fig. 4. A This plate is provided with screwholes, for securing it to the door Gr, and with a circular hub, c, through Which is a i square hole, ot' a proper size to tit the square portion of the spindle or bolt B. This circular hub e is of such size as to lit the mouth of the barrel A, and when secured in place, as

shown in Fig. 3, it holds the barrel and bolt in place. D designates a stationary handle, secured rigidly to plate or plates F F. E designates a lever-handle, having its fulcrum at g, from which fulcrum an arm, h, extends into the door Gr, and through a slot at Vone side of the barrel A, and engages with a recess or notch upon one side ot' the bolt B., as shown l in Fig. A similar handle and lever, D E h, is also placed upon the opposite side of the door, and is connected with the bolt in like manner.

By moving the outer` arm ot' the lever E 7L toward the edge of the door, the arm h acts 'ilar to that shown in Fig. 6 may be employed,

and in which the inner arms of the operatinglevers run through the bolt, and are placed pue a little above the other, so as not to interere.

l claim as my inventionl. The latch-bolt B and its casing A, recessed at the side, in combination with the twin handles E h and D, the latter of which is stationary, and the former hung on a vertical axis, its outer arm E swinging laterally to and from its fellow, and its inner arm h within the recess at the side of the casing, all substantially as described, and for the purpose set forth. 4

2. The barrel A, having the square end plate d, in combination with the latch-bolt B and fastening-plate U, having the hub e, which iits Within the mouth of the barrel, all sub stantially as described.

y ORSON W. STOW.

Witnesses:

E. B. EloLcoMB,

E. M. HoTcHKIss. 

